* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #050503;
  color: #f5f0c6;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: 3;
  content: "";
  pointer-events: none;
}

body::before {
  background:
    radial-gradient(circle at center, rgba(0, 0, 0, 0) 44%, rgba(0, 0, 0, 0.34) 74%, rgba(0, 0, 0, 0.74) 100%),
    linear-gradient(rgba(255, 240, 155, 0.03), rgba(45, 33, 7, 0.12));
  mix-blend-mode: multiply;
}

body::after {
  opacity: 0.12;
  background-image:
    repeating-radial-gradient(circle at 18% 27%, rgba(255, 247, 180, 0.15) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(0deg, rgba(255, 255, 210, 0.05) 0 1px, transparent 1px 3px);
}

#world {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hud {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 6;
  display: grid;
  justify-items: center;
  width: min(92vw, 420px);
  transform: translateX(-50%);
  pointer-events: none;
}

#startButton {
  min-width: 128px;
  min-height: 44px;
  border: 1px solid rgba(255, 246, 164, 0.45);
  border-radius: 6px;
  background: rgba(34, 31, 12, 0.78);
  color: #fff7b2;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0;
  cursor: pointer;
  pointer-events: auto;
  backdrop-filter: blur(8px);
}

#startButton:hover {
  background: rgba(58, 52, 18, 0.86);
}

.crosshair {
  position: fixed;
  left: 50%;
  top: 50%;
  z-index: 5;
  width: 10px;
  height: 10px;
  border-right: 2px solid rgba(255, 247, 178, 0.65);
  border-bottom: 2px solid rgba(255, 247, 178, 0.65);
  transform: translate(-50%, -50%) rotate(45deg);
  opacity: 0;
  transition: opacity 160ms ease;
  pointer-events: none;
}

.death-overlay {
  position: fixed;
  inset: 0;
  z-index: 7;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 18px;
  background:
    radial-gradient(circle at center, rgba(96, 0, 0, 0.2), rgba(5, 0, 0, 0.92) 72%),
    rgba(0, 0, 0, 0.72);
  opacity: 0;
  pointer-events: none;
  transition: opacity 1600ms ease;
}

.death-title {
  color: #b40000;
  font-size: clamp(34px, 9vw, 92px);
  font-weight: 900;
  letter-spacing: 0;
  opacity: 0;
  transform: translateY(14px) scale(0.96);
  text-shadow:
    0 0 18px rgba(255, 0, 0, 0.72),
    0 0 42px rgba(120, 0, 0, 0.62),
    0 4px 22px #000;
  transition:
    opacity 4200ms ease,
    transform 4200ms ease;
}

#restartButton {
  min-width: 140px;
  min-height: 44px;
  border: 1px solid rgba(255, 227, 154, 0.42);
  border-radius: 6px;
  background: rgba(21, 7, 3, 0.86);
  color: #ffebb0;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  pointer-events: auto;
}

body.dead .death-overlay {
  opacity: 1;
  pointer-events: auto;
}

body.dead .death-title {
  opacity: 1;
  transform: translateY(0) scale(1);
}

body.dead .crosshair {
  opacity: 0;
}

body.playing .crosshair {
  opacity: 1;
}

body.dead.playing .crosshair {
  opacity: 0;
}

body.playing .hud {
  opacity: 0;
  transition: opacity 160ms ease;
}

@media (max-width: 520px) {
  .hud {
    bottom: 18px;
  }
}